I could use some advice. I bought a new tank (300 liters/about 80g) which I set up a bit more than a month ago. The cycle is still not completely finished (had a stall in between), but 1ppm ammonia is converted every day, my nitrites are at a stable 0.25. It went up to about 1, went down to where it is now, but doesn't go up, doesn't go down for quite some time now even if ammonia is converted. Nitrates are rising. I guess then that some of the nitrites must be converted, but not enough to handle all of it. PH is 7.5. My old tank (60 liters) has a broken filter, but I've kept my little (unidentified) tetra in there together with my rabbit snail while waiting for the cycle to finish in my big tank. The thing is that I'm moving. I set up the new tank in my new house, but the old tank is in my old house. I didn't move it since i figured I would move only the fish and toss the tank. I go there to feed and change the water every now and then, along with monitoring and testing how everything is going. It's been fine so far, but I don't want to keep them in there for too long. This weekend I have to get my remaining stuff out of there though, so that the buyer can move in. Should I even bother setting up the old tank (which doesn't even have a working filter) in my new place, or do I make a water change in the new tank, and then finish the cycle fish in? Add a few more tetras with the fish and the snail and let them do the rest of the work while I monitor it? Perhaps pouring in some tss at the same time? It seems I'm close to the end, so just adding a few fish might be a tiny enough bioload for the bacteria which are already there to handle it? And it's a big tank, so anything generated by just a few tetras should be quite diluted, right? And in that case, how many do I add? I guess it would have to be enough of them to keep it going, but not so many that everything goes completely wrong. My thought at this point is a school of head and tail light tetras I haven't been able to find the same species as my unidentified tetra anywhere in the city where I live, and the shop where I bought them don't sell them anymore. It looks sort of like a head and tail light tetra with the dot at the base of the tail, but without the "lights" and red eyes. And before anyone suggests it Prime is not really an option for me. I can't see it being sold anywhere in Norway. I'm using Aqua Safe to get rid of the chlorine.